Question

the sum of the digits of a two digit no. is 9, if we interchange the place of the digit the new no. is 27 mare than the original no. Find the no.










I know the answer is 36 but i don't know how to present it

Answer 1

$\huge\red{\ddot\smile}$ hope it helps you ✔️ ✅$\huge\red{\ddot\smile}$

Answer 2

Helo mate here your ans

Let the digits be x and y

Then, x +y =9

on reversing , we get the new no. as 10 y +x

The new no. is greater than the old no. by 27 I. e

(10y+x) -(10y +y) = 27

or 9 y-9x= 27 , or y-x = 3 and x +y =9

Adding the two equation , we get 2 y =12 or y=6

thus, x=3

therefore , the original no is 36

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